This 1884 de Dion Bouton et Trepardoux Dos-a-Dos Steam Runabout was one Count de Dion's second prototype and can lay claim to having "won" the world's first automobile race. Although it takes more than half an hour to "steam" before it can be driven and needs "watering" every 20 miles, it is nonetheless, one of the most significant automobiles in history ... and it's for sale. Extensive detailed photo gallery.